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Polini Evolution 50cc 16hp zuma cylinder

Looking to stay stock cc, but make some serious hp? This polini evolution 50cc cylinder makes 2x the hp of your athena, or similar 70cc kit. Expect up to 16HP, from this quality crafted 50cc bore that can spin upwards of 13,300rpm.


You cant run this on an oem crank. You will need an aftermarket crank, or your stock one will likely grenade

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